Results 291 to 300 of about 963,154 (329)

Holographic Laser Radar

Optics and Photonics News, 1993
Experimental results from a fine-resolution three-dimensional (3-D) imaging method are presented. An object is flood illuminated with coherent light from a frequency-tunable laser. Electronic holograms are then recorded for a series of laser frequencies. These recordings are digitally assembled into a 3-D data array that is Fourier transformed to yield
J C, Marron, K S, Schroeder
openaire   +2 more sources

MIMO radar, SIMO radar, and IFIR radar: a comparison

2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers, 2009
This paper focuses on a simple beamforming problem and compares the MIMO and SIMO radar systems for the case where the transmitter and receiver are collocated. The simplicity of the application allows one to see clearly where the advantages of MIMO radar come from, and what the tradeoffs are.
P. P. Vaidyanathan, Piya Pal
openaire   +1 more source

Radars de Surface - Radars Civils et Radars CĂ´tiers

Technologies radars et applications, 2014
Cet article presente les radars qui operent au sol ou sur un navire. Dictinction est faite tout d'abord, parmi les radars de surface, entre les radars primaires (de veille, de poursuite, multifonction) et les radars secondaires (de surveillance, d’identification). Sont ensuite decrits les radars civils et les radars cotiers. Pour chacun de ces domaines,
Philippe BILLAUD   +4 more
openaire   +1 more source

RADAR | Precipitation Radar

2003
Precipitation radars scan their vicinity to determine the location, intensity, and structure of showers and storms. Several different radar variables are used to determine different aspects of the precipitation. Radar reflectivity measures the number and size of particles. In radars that transmit and receive horizontally as well as vertically polarized
openaire   +1 more source

Radar 2020: The future of radar systems

2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2015
The first radar was patented 110 years ago. Fast forward to today, radar applications have become ubiquitous in typical applications i.e. speed control, air traffic control, airborne and space-borne missions, military applications and remote sensing. Research for medical radar applications is also progressing well for breast cancer detection and tumor ...
Wiesbeck, Werner   +5 more
openaire   +3 more sources

Spaceborne Laser Radar

Applied Optics, 1971
Laser radar systems are being developed to acquire and track targets in applications such as the rendezvous and docking of two spacecraft. To search effectively for and locate a target using a narrow laser beam, a scanning system is needed. This paper describes a scan technique whereby a narrow laser beam is synchronously scanned with an equally narrow
openaire   +2 more sources

Quantum Radar vs Noise Radar

2016 9th International Kharkiv Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW), 2016
Preliminary results of the comparative analysis of Quantum Radar (QR) based upon quantum entanglement phenomenon and Noise Radar (NR) based upon classical coherence notion and correlation processing of random signals are presented in the paper. It has been shown that the basic idea of entangled multi-photon QR for simultaneous implementing of high ...
openaire   +1 more source

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